Repair manual

General Description
www.webasto.us 5 Webasto Product N.A., Inc.
™
2. General Description
The BlueCool Truck system is based on the refrigeration
principle and the simple storage of cold energy.
The BlueCool Truck system essentially consists of the
following
– a refrigeration unit assembly
– a cold storage assembly
– an air-handler assembly
– a cold transfer system
– a power inverter
Figure 1. BlueCool Truck System
To control and monitor it, the BlueCool system uses
– a system control module with temperature sensor
– a cold storage core temperature sensor (digital)
– an ambient temperature sensor
– a vehicle key on signal circuit
– a High/Low refrigerant pressure cutout switch
– a compressor overheat/overload cutout switch
The power supply to operate the BlueCool Truck System
is supplied externally via the vehicle batteries or an
optional “Shore-power accessory kit”.
The power inverter converts 12 volts DC supplied by the
vehicle batteries into 110 volts AC required to drive the
refrigeration compressor.
Where the vehicle is equipped with the optional shore-
power accessory kit, the power inverter will be bypassed
whenever the shore-power accessory kit is active.
2.1 Refrigeration Unit Assembly
The refrigeration unit is comprised of an electric
refrigeration compressor, a condenser core with an
electric automotive type radial fan, an evaporator (inside
the cold storage core) and a thermal expansion valve.
Figure 2. Refrigeration Unit Assembly
2.2 Cold Storage Assembly
The cold storage assembly is comprised of multiple layers
of a freeze medium in the form of a vacuum sealed,
water saturated, patented graphite matrix which is
interlaced with a refrigeration evaporator core and a
coolant circulation core. The entire storage assembly is
encapsulated with approximately 2.5 in. (65mm) of
urethane foam insulation. There are no serviceable items
inside.
Figure 3. Cold Storage Assembly